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Interview Questions

Interview Question and Answers

These are the Questions that are normally asked in a job interview. Interview questions are very specific to the job role you are applying. Most of the times, interview for a job is done if different phases or categories. There are different rounds interviewer has to go through. However, there are certain questions in the interview which are common and can be done real well if we went prepared.

Interview Questions can be in various categories like:

Accounting and Finance, Marketing and Sales, Manufacturing, Finance, Hospitality questions, Law , Leadership and management, customer service, medical and health care, call center, Human Resource, etc.

How to prepare for Interview question and answers?

How to prepare for Interview question and answers? There are many possible ways in which you can prepare for the interview question and answers. If it is technical, you have many important questions that you are sure to ask in the interview. Especially, if you are thorough with the fundamentals or basics, most of your interview is cleared without much hassle.

The key is to prepare for with proper research about the company, where you are going to take the interview. Make sure to go through few same Human Resource questions as well. They will enable you to make good answers, and position yourself as a very good prospect for the job. Make sure you answer the interview question in a way that you will be the best fit for the job. And this can happen only through enough confidence. Make sure to go through as many questions as possible to gain the confidence.

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Q:

For printing out strings, there are echo, print and printf. Explain the differences.

Answer - echo is the most primitive of them, and just outputs the contents following the construct to the screen. print is also a construct (so parentheses are optional when calling it), but it returns TRUE on successful output and FALSE if it was unable to print out the string. However, you can pass multiple parameters to echo, like:

and it will output the string "Welcome to TechInterviews!" print does not take multiple parameters. It is also generally argued that echo is faster, but usually the speed advantage is negligible, and might not be there for future versions of PHP. printf is a function, not a construct, and allows such advantages as formatted output, but it’s the slowest way to print out data out of echo, print and printf.
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Q:

Would you initialize your strings with single quotes or double quotes?

Answer Since the data inside the single-quoted string is not parsed for variable substitution, it’s always a better idea speed-wise to initialize a string with single quotes, unless you specifically need variable substitution.
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Q:

How do you call a constructor for a parent class?

Answer parent::constructor($value)
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Q:

Are objects passed by value or by reference?

Answer Everything is passed by value.
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Q:

Explain the ternary conditional operator in PHP?

Answer Expression preceding the ? is evaluated, if it’s true, then the expression preceding the : is executed, otherwise, the expression following : is executed.
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Q:

How do you pass a variable by value?

Answer Just like in C++, put an ampersand in front of it, like $a = &$b
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Q:

How do you define a constant?

Answer Via define() directive, like define ("MYCONSTANT", 100);
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Q:

What’s the difference between include and require?

Answer It’s how they handle failures. If the file is not found by require(), it will cause a fatal error and halt the execution of the script. If the file is not found by include(), a warning will be issued, but execution will continue.
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